Nonlinear optical dynamics—intensity-dependent response of light upon interaction with materials under high-intensity light sources—are of huge significance in modern photonics, finding applications ...

Using a newly developed type of spectroscopy, researchers have shown that electrons in a semiconductor are best described as a cloud with a size of a few nanometer (one nanometer is one billionth of ...

On the move: strontium atoms in an atomic clock. (Courtesy: Steven Burrows and Ye Group/JILA) An optical atomic clock has been used by physicists in the US to study the effects of spin–orbit coupling.